Biological degradation of plastics: A comprehensive review

Growth of non-phototrophic microorganisms using solar energy through mineral photocatalysis

“…faecalis has versatile functions including degradation of polyaromatic hydrocarbons 21 and plastics 22 , arsenite oxidation 23 , heterotrophic nitrification-aerobic denitrification to remove ammonium in wastewater 24 , siderophore production, and promotion of plant growth in the soil rhizosphere 25 . In the presence of the semiconducting mineral CdS and light, NAD can be photoreduced to NADH via the direct electron transport from CdS to the enzyme transport chain of an Alcaligenes species 26 .…”

Biodegradation of films of low density polyethylene (LDPE), poly(hydroxibutyrate-co-valerate) (PHBV), and LDPE/PHBV (70/30) blend with Paecilomyces variotii

“…The proposals include: (a) the insertion of elements in the packaging structure which promotes photodegradation (photosensitizers, metal salts, quinones, benzophenol, etc. ), (b) a study on the use of polymers (polyamides, polyesters, polyurethanes) containing hydrophilic structures in their composition, predisposing them to degradation by the action of the environmental moisture, (c) the development of new packaging materials, based on synthetic polymers with modified starch or other polymers which exhibit natural sensitivity to the attack by environmental microorganisms (d) biodegradation studies in different environments, aerobic and anaerobic [2][3][4][5] .…”

“…T h e P H B V ( p o l y ( 3 -h y d r o x y b u t y r a t e -c ohydroxyvalerate) is a natural biodegradable polymer (produced by microorganisms), also referred to as biopolymer or bioplastic [2][3][4][5] . It is less brittle than its homopolymer, PHB (poly (3-hydroxybutyrate) [17] and its physical and thermal properties depends on the content of hydroxyvalerate units (HV) [18] .…”

Influência da geometria e umidade de colunas de solo na biodegradação de filmes de PCL

“…A biodegradação é regida por diferentes fatores, que incluem as características do polímero, tipo de organismo, e a natureza do pré-tratamento. Os polímeros são substratos potenciais para a ação de microrganismos heterotróficos [2] .…”

“…A biodegradação é regida por diferentes fatores, que incluem as características do polímero, tipo de organismo, e a natureza do pré-tratamento. Os polímeros são substratos potenciais para a ação de microrganismos heterotróficos [2] .Algumas características polímericas, tais como a mobilidade, taticidade, cristalinidade, massa molar e o tipo de grupos funcionais e substituintes presentes na sua estrutura, desempenham um papel importante na sua degradação [3,4] . Durante a degradação o polímero é primeiramente convertido em seus monômeros, que posteriormente, mas não necessariamente podem ser mineralizados.…”